Mathematics, 27.04.2021 15:40, reeeeeee32
Each of a group of 20 intermediate tennis players is given two rackets, one having nylon strings and the other synthetic gut strings. After several weeks of playing with the two rackets, each player will be asked to state a preference for one of the two types of strings. Let p denote the proportion of all such players who would prefer gut to nylon, and let X be the number of players in the sample who prefer gut. Because gut strings are more expensive, consider the null hypothesis that at most 50% of all such players prefer gut. We simplify this to H0: p 5 .5, planning to reject H0 only if sample evidence strongly favors gut strings.
Required:
a. Which of the rejection regions {15, 16, 17, 18, 19, 20}, {0, 1, 2, 3, 4, 5}, or {0, 1, 2, 3, 17, 18, 19, 20} is most appropriate, and why are the other two not appropriate?
b. What is the probability of a type I error for the chosen region of part (a)? Does the region specify a level .05 test? Is it the best level .05 test?
c. If 60% of all enthusiasts prefer gut, calculate the probability of a type II error using the appropriate region from part (a). Repeat if 80% of all enthusiasts prefer gut.
d. If 13 out of the 20 players prefer gut, should H0 be rejected using a significance level of .10?
Answers: 2
Mathematics, 21.06.2019 19:30, Buddy01
Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit
Answers: 2
Mathematics, 21.06.2019 23:30, kaziyahf2006
Which two fractions are equivalent to 6/11? 6/22 and 18/33 12/22 and 18/33 12/22 and 18/22 3/5 and 6/10
Answers: 1
Each of a group of 20 intermediate tennis players is given two rackets, one having nylon strings and...
History, 14.10.2019 03:30
Social Studies, 14.10.2019 03:30
English, 14.10.2019 03:30
Mathematics, 14.10.2019 03:30